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Optimal design of neural networks for control in robotic arc welding

Ill-Soo, Kim, Joon-Sik, Son, Lee, Sang-Heon, & Yarlagadda, Prasad K. (2004) Optimal design of neural networks for control in robotic arc welding. Robotics and Computer-Integrated Manufacturing, 20(1), pp. 57-63.

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Abstract

Robotic gas metal arc (GMA) welding is a manufacturing process which is used to produce high quality joints and has to a capability to be utilized in automation systems to enhance productivity. Despite its widespread use in the various manufacturing industries, the full automation of the robotic GMA welding has not yet been achieved partly because mathematical models for the process parameters for a given welding tasks are not fully understood and quantified. In this research, an attempt has been made to develop a neural network model to predict the weld bead width as a function of key process parameters in robotic GMA welding. The neural network model is developed using two different training algorithms; the error back-propagation algorithm and the Levenberg–Marquardt approximation algorithm. The accuracy of the neural network models developed in this study has been tested by comparing the simulated data obtained from the neural network model with that obtained from the actual robotic welding experiments. The result shows that the Levenberg–Marquardt approximation algorithm is the preferred method, as this algorithm reduces the root of the mean sum of squared (RMS) error to a significantly small value.

Impact and interest:

17 citations in Web of Science®
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ID Code: 6168
Item Type: Journal Article
Additional Information: For more information, please refer to the journal’s website (see link) or contact the author. Author contact details: y.prasad@qut.edu.au
Keywords: Robotic arc welding, Bead width, Process parameters, Neural network, Levenberg–Marquardt approximation algorithm, Error backpropagation algorithm
DOI: 10.1016/S0736-5845(03)00068-1
ISSN: 0736-5845
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Control Systems Robotics and Automation (090602)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2004 Elsevier
Deposited On: 15 Feb 2007
Last Modified: 29 Feb 2012 23:06

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